solutions
ATP- PC Sytem - ANSWER this energy system is used for atp production during High intensity
short duration exercise. Phosphocreatine decompeses and releases a large amount of energy to
construct ATP
How long does the ATP PC system provide energy for muscle contraction? - ANSWER 15 seconds
Phosphagen system represents most available source of ATP for muscle why? - ANSWER 1. it
does not depend on a long series of chemical reactions
2. it does not depend on transporting the oxygen we breathe to the working muscles
3. both ATP and PC are stored directly within the contractile mechanisms of the muscle
Kinesiology: What is Anatomical Position? - ANSWER Anatomical position is an erect posture of
the body with the face forward feet pointing forward and slightly apart, arms at the side and
palms forward with fingers and thums in extension. this is a point of reference including for the
cardinal planes and associated axes
Planes of the Body? - ANSWER 3 Cardinal Planes: Frontal, sagittal, transverse. Occur in 3
corresponding axes: anterior posterior, medial lateral, veritcal
Anaerobic Glycolysis? - ANSWER An energy system which is a major supplier of ATP during High
Intensity workouts, short duration activities such as sprinting. Stored glycogen is split into
glucose and through glycolysis split again into pyruvic acid. this energy is released to form ATP.
This process results in the formations of lactic acid which causes muscle fatigue
,Anaerobic Glycolysis vs ATP-PC systems - ANSWER Anerobic is 50% slower than the
phosphocreatine system. and can provide a person with 30 to 40 seconds of muscle contraction.
this is because
1.it does not require the presence of oxygen
2. it only uses carbohydrates ( glycogen and glucose)
3. it releases enough energy for the resyntheses of only small amounts of ATP
Aerobic Metabolism - ANSWER used predominantly during low intensity long duration exercise
such as a marathon
this system provides energy though oxidation of food: combination of fatty acids amino acids
and glucose with oxygen releases energy that forms ATP
Frontal plane or Coronal - ANSWER Divides body into anterior and posterior sections. Motions
in the plane such as abduction and adduction occur around an anterior posterior axis
Sagittal plane - ANSWER This plane divides body into right and left sections. Motions in this
plane such as flexion extension occur aorund a medial lateral axis
Transverse Plane - ANSWER The Transverse plane divides the body into upper and lower
sections. Motions in this plane are medial and lateral rotation which occur around a vertical
axis.
Fibrous joints are composed of? - ANSWER Are composed of bones that are united by fibrous
tissue and are nonsynovial. Movement is minimal to none permitted at the joint dependent on
the length of the fibers uniting the bone.
Suture? - ANSWER Union of two bones by a ligament or membrane
immovable joint
eventual fusion is termed synostosis
,E,G: sagittal suture of the skull
Syndesmosis - ANSWER E, g, Tibia and fibula with interosseous membrane
Bone connected to bone by a dens fibrous membrane or cord
very little motion
Gomphosis - ANSWER E;G, Tooth in its socket
Two Boney sufaces connect as a peg in a hole
the teeth and corresponding sockets in the mandible/maxilla are the only gomphosis joints in
the body
the periodontal membrane is the fibrouse componenet of the joint
Cartilaginous joints or Amphiarthroses? - ANSWER this has hyaline cartilage or fibrocartilage
that connects one bone to another: they are slightly movable
Synchondrosis- E.g.? - ANSWER E.g. : sternum and true rib articulation
1. Hyaline cartilage
2. cartilage adjoins two ossifying centers of bone
3. provides stability during growth
4. May ossify to a synostosis once growth is completed
5. Slight motion
Symphysis? E.g? 4 components? - ANSWER E.G. pubic symphysis
1. generally located at the midline of the body
, 2. Two bones covered with hyaline cartilage
3. two bones connected by fibrocartilage
4. slight motion
Synovial joints or Diarthroses? - ANSWER Define: Synovial joints provide free movement
between the bones they join. 5 distinguishing characteristics:
- Joint cavity -articular cartilage -synovial membrane - synovial fluid -and fibrous capsule.
Most complex and vulnerable to injury and are classified further by the type of movement and
shape of articulating bones
Uniaxial Joint, Motions? - ANSWER 1 motion around a single axis in one plane of the body
-Hinge ( ginglymus) elbow joint
-Pivot (trochoid) atlantoaxial joint
Biaxial Joint, Motions? - ANSWER Movement occurs in two planes around two axes through the
convex/concave surfaces
-Condyoid- metacarpophalangeal joint of a finger
-Saddle- carpometacarpal joint of the thumb
Multi-axial joint, motions? - ANSWER Movement occurs in three planes and around three axes
-Plane ( gliding)- carpal joints
- Ball and socket - hip joint.